Polylychnis radicans Plant Care
Polylychnis radicans (Nees) Wassh.
Updated · Sources · How we source care data
Polylychnis radicans is a species of flowering plant belonging to the family Acanthaceae. It is native to Guyana and French Guiana.
Every 7–10 days
Bright indirect to partial shade
65–80°F
50–70%
At a glance
How do you care for Polylychnis radicans?
Water Polylychnis radicans every 7–10 days, letting the top layer of soil dry out between waterings, and give it bright indirect to partial shade. It prefers temperatures of 65–80°F (18–27°C) and 50–70% humidity. Fertilize it every 6 months during the growing season.
Where Is the Polylychnis radicans Native To?
What Is the Polylychnis radicans?
Polylychnis radicans (Polylychnis radicans) belongs to the Acanthaceae family within the Polylychnis genus. Polylychnis radicans is native to Guyana and French Guiana.
Polylychnis radicans displays a clumping, spreading perennial growth habit, reaching up to 1.5 ft tall with a spread of approximately 2 ft. Polylychnis radicans produces small tubular flowers in clusters of red, orange, or yellow.
Leaf size: approximately 4 inches.
How Often Should You Water a Polylychnis radicans?
Polylychnis radicans requires watering every 7–10 days. Allow the top layer of soil to dry between waterings to prevent root rot. Reduce watering frequency during winter when growth slows.
Watering Frequency
Every 7–10 days
Let soil partially dry between waterings
What Light Does the Polylychnis radicans Need?
Polylychnis radicans thrives in bright indirect to partial shade. Avoid placing Polylychnis radicans in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Bright indirect to partial shade
What Temperature and Humidity Does the Polylychnis radicans Prefer?
Polylychnis radicans grows best at temperatures of 65–80°F. Polylychnis radicans prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
65–80°F
Humidity
50–70%
What Soil Mix Works Best for a Polylychnis radicans?
Well-draining, rich potting mix with added perlite for aeration. Good drainage is essential for Polylychnis radicans to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Polylychnis radicans?
Feed Polylychnis radicans every 6 months during the growing season (spring and summer) with a balanced fertilizer diluted to the strength on the label.
Pause feeding in autumn and winter, when growth slows, and never fertilize dry soil — water first.
Fertilizing
Every 6 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
How Do You Repot a Polylychnis radicans?
Repot every 1-2 years in spring. Choose a pot one size larger than the current container, and ensure it has drainage holes to allow excess water to escape.
How Do You Propagate a Polylychnis radicans?
Polylychnis radicans can be propagated through division of offsets, seeds.
Is the Polylychnis radicans Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Polylychnis radicans, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Polylychnis radicans?
Polylychnis radicans is susceptible to aphids, spider mites, whiteflies. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Polylychnis radicans Need?
Polylychnis radicans grows outdoors in USDA Zone 13b. It survives winters down to planting zone 13b. Polylychnis radicans is native to Guyana and French Guiana. In cooler regions, grow Polylychnis radicans as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 13b
Keep exploring plants
Polylychnis radicans is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Polylychnis genus — compare its care with other Polylychnis species on PlantoScan.
Polylychnis is part of the Acanthaceae plant family — browse all Acanthaceae genera and species.
Polylychnis radicans thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Polylychnis radicans (Nees) Wassh., family Acanthaceae (first published in Fl. Guianas , ser. A, 23(156): 105 (2006)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Polylychnis radicans, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 13b, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
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